A Jedi student. They are past the first part of their Jedi training and are now apprentices to other Jedi masters. They have exceptional skills, to become powerful and great. So Padawans are also called 'My apprentice' by their masters. Or 'My Padawan'
Padawans have small plaits in their hair. This is a good way to spot them. Very cute.

Obi-Wan Kenobi: What took you so long?

Anakin: Well, you know, Master, I couldn't find a speeder that I really liked...

Anakin: ...with an open cockpit and the right speed capabilities.

Obi-Wan: If you spent as much time practicing your saber techniques as you did your wit, you'd rival Master Yoda as a swordsman.

A student of the force. A learned youngin. One that has the ability to posses great power, but has yet to achive all knowledge of the force. One who wants to know more.
Until you are the master of masters, you are all someones padawan.

You are learning well my young padawan
Teach you I can not young padawan.
Too old to teach you are young padawan.